Method insert

crates/environ/src/string_pool.rs:180–196

Insert a new string into this pool.

(&mut self, s: &str)

    /// Insert a new string into this pool.
    pub fn insert(&mut self, s: &str) -> Result<Atom, OutOfMemory> {
        if let Some(atom) = self.map.get(s) {
            return Ok(*atom);
        }

        self.map.reserve(1)?;
        self.strings.reserve(1)?;

        let mut owned = TryString::new();
        owned.reserve_exact(s.len())?;
        owned.push_str(s).expect("reserved capacity");
        let owned = owned
            .into_boxed_str()
            .expect("reserved exact capacity, so shouldn't need to realloc");

        self.insert_new_boxed_str(owned)
    }

    fn insert_new_boxed_str(&mut self, owned: Box<str>) -> Result<Atom, OutOfMemory> {
        debug_assert!(!self.map.contains_key(&*owned));